One is to tighten the cylinder head screw with a sports wrench. Doing so easily breaks the nut and makes the tightening torque of the screw inconsistent, which can easily cause the plane deformation of the cylinder head. It is necessary to use a special sleeve and a torque wrench to evenly tighten the diagonal from the middle to the edge.

The second is to use silk cloth air filter. Some robots cover the air filter with a layer of silk cloth, which they believe will enhance the filter effect of the tractor and make the air cleaner. Actually, the silk cloth will hinder the air from entering the cylinder smoothly, and the gambling cylinder will have insufficient gas supply and incomplete combustion, causing the tractor to emit black smoke and power.

The third is to wipe the parts with cotton yarn. When the diesel engine is overhauled, some of the crew will repeatedly scrub the parts and the crankshaft interior with cotton yarn and diesel fuel. This way, the oil will be removed, but the application time will not be long enough to burn the tiles. This is due to the fact that a layer of cotton fiber is attached to the oil filter in the oil pan, which will hinder the oil from entering the oil passage and cause burning of the tiles. Therefore, the brush should be used for cleaning parts.

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